Politico and other sources report the grand jury handed down an indictment of former President Donald Trump in New York City this afternoon. Trump called it "election interference."
Media aren't talking about an arrest as yet. The White House has indicated it will not comment on the indictment.
I seem to remember that FBI Director James Comey refused to charge Hillary Clinton for misdeeds with classified documents because it would be "election interference." These appear to be analogous cases - announced presidential candidates misbehaving somewhat.